Counter Component - JS OOP System Case Study

Building a reusable, state-driven UI component using JavaScript OOP

Let's Work Together

Overview

This project is a reusable counter component built using JavaScript Object-Oriented Programming (OOP).

The goal was to create a component that manages its own state and updates the user interface dynamically based on user interaction.

The project also includes a documentation and demo page that demonstrates how the component works and how it can be reused in other applications.

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Goal Image

The Goal

  • 1. Build a reusable counter component using OOP principles
  • 2. Create a state-driven UI that updates dynamically
  • 3. Demonstrate advanced JavaScript concepts like inheritance and polymorphism
  • 4. Provide a clear demo and documentation for usage

Research

I explored JavaScript component design patterns and OOP concepts to understand how reusable UI components are structured.

The focus was on creating a system where each counter manages its own state independently, similar to how modern UI frameworks handle components.

Key Takeaways

  • 1. Encapsulation improves code organization and maintainability
  • 2. Reusable components reduce repetition in development
  • 3. OOP concepts can be applied effectively in front-end development
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Dr Nut design and development process

My Role

I was responsible for the complete development and implementation of the counter system.

  • Designed the component structure using JavaScript classes
  • Implemented state management within each counter
  • Created multiple counter variations using inheritance
  • Built the UI and integrated it with the logic
  • Developed a demo page to showcase functionality

Tools:JavaScript (ES6), HTML, SCSS, GSAP

Final Outcome

The final outcome is a fully functional, reusable counter component system with multiple variations.

This project highlights my ability to:

  • Apply Object-Oriented Programming in JavaScript
  • Build reusable and scalable components
  • Combine logic with interactive UI behavior
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Before vs After

View the Code

Want to see how this project was built? Explore the full source code, structure, and implementation details on GitHub.

View on GitHub →